Flat Sinker

Flat sinkers are just that, flat sided which reduces tumbling. These are a good back up to pyramid sinkers. On a calm day at the beach, a two ounce flat sinker will hold bottom well with a top and bottom rig. Once that starts to not hold then you move up to a pyramid sinker.
Flat sinkers are not for the large rigs used in the surf such as mullet rigs, but the smaller rigs. Top and bottom rigs, fireball rigs, spot rigs, and kingfish rigs.